Unfortunately, in 1965, when he was to finish the final issue of 8 Man, he was arrested for possessing a handgun (he had contemplated suicide). With Kuwata in jail, co-creator Hirai got other manga artists to finish the final issue, but wasn’t satisfied with it. It was published in a manga magazine, but has never before been reprinted.

Nevertheless, Kuwata, released from prison shortly thereafter, continued his manga work well into the 1970s, but also ran into depression and alcoholism. In 1977, he had an epiphany and converted to Buddhism. He has since done beautiful art books about the life of Buddha. He also occasionally got back into manga work, and in 1992, he agreed to do his own version of the final issue of 8 Man, upon being asked by co-creator/friend Kazumasa Hirai.

Kuwata’s Batman work was published in Japan around the time of the huge hit TV show; like most manga adaptations of American superhero comics, its appeal seems to have been somewhat limited to the Japanese audience, and was largely unknown in the States until the publication of a compilation from a couple years ago, entitled Bat-Manga.

Bat-Manga was curated by Chip Kidd, noted graphic designer, author and Batman fan. There was a bit of a kerfluffle when the book was published because of the absence of a credit for Kuwata on the cover. While this was almost definitely an oversight, it remains an unfortunate error. Nevertheless, on its release, Kuwata finally received recognition for his work on the character; Grant Morrison even introduced the Kuwata characters Lord Death Man and Professor Gorilla to DC continuity in the initial Japan-centric arc of his Batman Inc. series.